Unified Expression Language - The Java EE 6 Tutorial, Volume I

Document Information

Part I Introduction

2. Using the Tutorial Examples

Part II The Web Tier

3. Getting Started with Web Applications

4. JavaServer^TM Faces Technology

5. Introduction to Facelets

6. Unified Expression Language

Immediate and Deferred Evaluation Syntax

Immediate Evaluation

Deferred Evaluation

Value and Method Expressions

Value Expressions

Method Expressions

Defining a Tag Attribute Type

Literal Expressions

Examples of EL Expressions

7. Using JavaServer^TM Faces Technology in Web Pages

8. Using Converters, Listeners and Validators

9. Developing With JavaServer^TM Faces Technology

10. Java Servlet Technology

Part III Web Services

11. Introduction to Web Services

12. Building Web Services with JAX-WS

13. Building RESTful Web Services with JAX-RS and Jersey

Part IV Enterprise Beans

14. Enterprise Beans

15. Getting Started with Enterprise Beans

16. Running the Enterprise Bean Examples

Part V Contexts and Dependency Injection for the Java^TM EE Platform

17. Introduction to Contexts and Dependency Injection for the Java^TM EE Platform

18. Running the Basic Contexts and Dependency Injection Examples

Part VI Persistence

19. Introduction to the Java Persistence API

20. Running the Persistence Examples

21. The Java Persistence Query Language

22. Creating Queries Using the Criteria API

Part VII Security

23. Introduction to Security in the Java EE Platform

24. Getting Started Securing Enterprise Applications

25. Getting Started Securing Web Applications

Part VIII Java^TM EE Supporting Technologies

26. Introduction to Java^TM EE Supporting Technologies

27. Transactions

28. Resource Connections

Chapter 6

Unified Expression Language

This chapter introduces the Unified Expression Language (also referred to as EL) which provides an important mechanism for enabling the presentation layer (web pages) to communicate with the application logic (backing beans). EL is used by JavaServer Pages^TM (JSP^TM) as well as JavaServer^TM Faces technologies.

Introduced as a primary feature of JSP 2.1, the EL represents a union of the expression language offered by JSP 2.0 and the expression language created for JavaServer Faces technology.

The material in The Java EE 6 Tutorial, Volume I is copyright-protected and may not be published in other works without express written permission from Sun Microsystems.